River Report
Report Bugs Weather Map River Rating: River Flow: 214 cfsCurrent Temp: 55°F 
River Statistics:
»Big Thompson in Moraine Park
Current:   214 cfs
6 Hrs Ago:   180 cfs
12 Hrs Ago:   169 cfs
24 Hrs Ago:   160 cfs
Gage Height:   5.47 ft

Winter is officially over (at least in the sub-9,500 ft realm)! Waters in the park are warming and rising, and the fish are hungry and willing. The moraine and upper sections of the Big T, and Glacier Creek pretty much all the way up and down, are fishing great. Dry droppers or short leash nymph rigs with a palsa pinch-on float or small, clear air lock will do you well, although there is seldom a good excuse not to have a dry fly like a sz #14-18 parachute adams or a #12-14 stimulator on your rig in the park once the weather warms (unless you're swinging a streamer or nymphing the undercuts in the Moraine looking to pick up a hog.) Some of the lower-elevation high lakes such as the Loch are reportedly reaching fishable status at the inlet and outlet, but anything higher will still be iced in until probably early to mid June. If the Moraine is crowded when flows are high, it can be a good plan B to fish the lesser-explored braids of Cub Creek that branch off from the main section. In terms of specific bugs, look for caddis to be more and more prevalent, with midges and BWO continuing to be a strong presence this month. On especially warm days, black beetles and ants can be a golden ticket to some excellent dry fly action, as fish in the park tend to like a meaty terrestrial meal.

Report Updated On: 05/16/2017
  Last updated 7:45 PM MST - Powered by USGS Water Services  
The Ultimate Fly Fishing Report
Casting a fly in a tranquil mountain stream, feeling the tug on the line, and holding a beautiful rainbow trout makes us feel alive and intensely connected with nature. Fly fishing is our way of life and we are blessed with hundreds of nearby rivers and streams just a short distance away from Boulder. From the swift spring waters of the Clear Creek to the meandering bends of the South Platte, it's critical to consider fishing conditions in advance and prepare accordingly. We rely on our experienced guides who venture into the wild to let us know which rivers favor fly fishing, where fish are biting, and which fly patterns are most effective. Planning a successful fishing trip also requires knowledge of stream flows at various river points and an accurate weather forecast for a given destination. At Rocky Mountain Anglers, we are dedicated to providing all avid anglers with detailed and timely information about hatches, water, and weather conditions. So before you head out the door on your next fishing adventure, visit our web site to find valuable information that will prepare you for a successful trip. Have fun chasing after your next trophy trout and enjoy nature's beauty!The Rocky Mountain Anglers Crew
If you have an update regarding a river's fishing conditions, feel free to email us at